Hello , i need to buy an external disc , preferably a seagate , of 1 or 2 TBs , which one do you advice on www.pcandparts.com ? and what are the differences ?

Update: Aghhhhh! i cant understand a thing , why External HDDS arent just HDDS anymore?! what are the expansion stuff, and why are they huge? what the hell is goflex? someone please explain in detail.
I dont care about flexibility ,i need something to transfer data to and back up on it (even manually i dont care)

__________________problems of performance appraisal is that it sucks to memorize them

okey , i dont understand a thing , please explain in detaisl , whats with power? what is it exactly? whats goflex? is it an external or internal HD ? what are its features?

It is an external HD... with power ya3ne it has a power supply, needs to be plugged to electricity, not like some other HD that have just a USB cable... Goflex is just a name I think... I'm not into details and features like this, this HD was recommended to me by a friend.

My knowledge about these is ZERO , on the website they provide limited information , so much information is appreciated , whats the difference? what are the features?
both need independent power else than the usb ? need details pleasee.

__________________problems of performance appraisal is that it sucks to memorize them